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Accessories >> Objectives
NIR Infinity-Corrected Objectives
Description  

These objectives are world-renowned for setting the standard of excellence for long working distance microscope optics.
They have achieved the best combination of working distance and optical performance by using a new approachavoiding outdated conventions used by competitors.
Making the objectives larger and longer has made the designs easier (95mm parfocalization length).
For an infinity corrected system, a secondary (or tube) lens is required.
All stated magnifications are based on a tube lens focal length of 200mm.
Works with all Mitutoyo parts and can be placed directly in a system currently utilizing Mitutoyo objectives.

Name Magnification N.A. W.D.(mm) Focus Depth of Field (m) Resolution
Length(mm) (m)
Long 
Working
 
Distance
 
Infinity Plan
 
Apo
 NIR 
Objective
2x 0.055 34.6 100 91 5
5x 0.14 45 40 14 2
10x 0.28 34 20 3.5 1
20x 0.29 30.8 10 3.5 1
50x 0.42 20.5 4 1.6 0.7




High level Numerical Aperture NA and Resolution NIR APO Objetives:
NAME  N.A. W.D.(mm) f(mm) R(m) p(m) VISUAL FIELD VISUAL FIELD TRANSMITTANCE REMARK
(mm/) (mm/1/2CCD)
NIR Plan 
Apo 20X
0.45 16.7 10 0.61 1.36 1.2 0.240.32 450nm~700nm>70%,
770nm~790nm>90%
Achromatic 
Wavelength:780nm
NIR Plan 
Apo 50X
0.8 3.34 4 0.34 0.43 0.48 0.100.13 450nm~700nm>70%,
770nm~790nm>90%
Achromatic 
Wavelength:780nm
NIR Plan 
Apo 50X
0.67 10 4 0.7 1.6 0.48 450nm~700nm>70%,
770nm~790nm>90%
Achromatic 
Wavelength:780nm



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